英语四级新题型模拟训练大学英语四级新题型模拟训练一、快速阅读Ifitweren’tfornicotine,peoplewouldn’?osmoke,hatactsonthebrain,alteringpeople’smoods,,asitiswidelyknown,nicotinehasadarkside:,theymustgettheirfixofitregularly,,whichmeansthatlong-,420,o-,,eedinabstainingformorethanayear;’sbrainandverybeing?oisapotentdrugandsmokers,andevensomescientists,-,usersalsosaynicotinehelpsthemtomaintainconcentration,reduceanxiety,relievepain,andevendampentheirappetites(thushelpinginweightcontrol).Unfortunately,,oproducts,itcancausehighbloodpressure,,,oand,perhapssurprisingly,intomatoes,考试资料网@@资料分享平台potatoes,andeggplant(thoughinextremelylowquantitiesthatarepharmacologicallyinsignificantforhumans).Assimpleasitlooks,,oresearchersfoundthatmuchofthenicotineinacigarettewasn’oleaf,,,
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